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Table 2 Variables associated with self-reported outdoor tanning behavior among undergraduate students (n = 1732)

From: Intentional tanning behaviors among undergraduates on the United States’ Gulf Coast

Variable Outdoor Tans N (%) Odds Ratio 95% CI Adjusted Odds Ratio 95% CI
Age
 18 years old (ref) 156 (9.0) 1.00   1.00  
 19 years old 324 (18.7) 1.10 0.81–1.50 1.03 0.67–1.60
 20 years old 298 (17.2) 1.19 0.87–1.64 0.86 0.50–1.48
 21 years old 303 (17.5) 1.78 1.27–2.49 1.33 0.74–2.41
 22+ years old 651 (37.6) 1.05 0.79–1.39 0.58 0.33–1.00
Year
 Freshman (ref) 336 (19.4) 1.00   1.00  
 Sophomore 381 (22.0) 1.19 0.94–1.52 1.15 0.78–1.69
 Junior 471 (27.2) 1.22 0.97–1.53 0.97 0.62–1.53
 Senior 544 (31.4) 1.38 1.10–1.73 1.33 0.82–2.14
Sex
 Male (ref) 454 (26.3) 1.00   1.00  
 Female 1274 (73.7) 1.79 1.51–2.12 1.75 1.39–2.20
Race
 White (ref) 1428 (82.4) 1.00   1.00  
 Black or African American 85 (4.9) 0.06 0.05–0.08 0.05 0.03–0.07
 Other 219 (12.6) 0.48 0.38–0.61 0.42 0.30–0.58
Alabama Resident
 Yes (ref) 383 (22.2) 1.00   1.00  
 No 1345 (77.8) 0.73 0.60–0.90 0.79 0.61–1.03
Immediate family member with history of melanoma
 No (ref) 1324 (76.5) 1.00   1.00  
 Yes 130 (7.5) 1.26 0.90–1.75 0.68 0.45–1.03
 Don’t know/Not sure 277 (16.0) 0.77 0.63–0.95 0.67 0.51–0.88
Fitzpatrick score
 Fitzpatrick Type V/VI (ref) 280 (16.2) 1.00   1.00  
 Fitzpatrick Type I/II 225 (13.0) 1.60 1.23–2.08 0.19 0.13–0.29
 Fitzpatrick Type III 612 (35.3) 4.33 3.42–5.49 0.59 0.40–0.86
 Fitzpatrick Type IV 615 (35.5) 2.84 2.28–3.53 0.88 0.64–1.22
Number of lifetime blistering sunburns
 None (ref) 496 (28.6) 1.00   1.00  
 1–2 764 (44.1) 2.66 2.20–3.21 1.38 1.06–1.80
 3–5 360 (20.8) 2.25 1.79–2.83 1.07 0.77–1.48
 6 or more 112 (6.5) 1.73 1.23–2.42 0.87 0.55–1.37
Ever spray tanned
 No (ref) 1178 (69.8) 1.00   1.00  
 Yes 510 (30.2) 6.61 4.95–8.83 2.26 1.60–3.20
Ever used a tanning bed
 No (ref) 572 (34.0) 1.00   1.00  
 Yes 1111 (66.0) 5.33 4.46–6.37 2.54 2.03–3.18
Intend to use tanning bed next 12 months
 No (ref) 1287 (74.7) 1.00   1.00  
 Yes 437 (25.3) 31.26 16.61–58.84 10.63 5.38–20.98